{"id":"CVE-2026-32895","aliases":["EUVD-2026-13970","GHSA-v8cg-4474-49v8","GHSA-xgwg-m42c-8q62"],"status":"published","title":"OpenClaw \u003c 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers","description":"OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00188,"percentile":0.08477,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-03-12T14:21:59Z","modified":"2026-10-28T02:30:31Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.2.26"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2026.2.25"},{"fixed":"2026.2.26"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.2.26"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-v8cg-4474-49v8","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/3d30ba18a2aba1e1b302e77ff33145c3b06c01c8","tags":["patch","Patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-sender-authorization-bypass-in-slack-system-event-handlers","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32895","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-v8cg-4474-49v8"},{"url":"https://github.com/advisories/GHSA-xgwg-m42c-8q62"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32895.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-32895","title":"OpenClaw \u003c 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers","description":"OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","status":"published","published":"2026-03-21T00:42:31.52Z","modified":"2026-06-23T16:15:11.712Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:19:57.47301Z"}],"euvd":[{"id":"EUVD-2026-13970","description":"OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","status":"published","published":"2026-03-21T00:42:31Z","modified":"2026-06-23T16:15:11Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:32.273921Z"}],"ghsa":[{"id":"GHSA-v8cg-4474-49v8","title":"OpenClaw: Slack system events bypass sender authorization in member and message subtype handlers","description":"### Summary\nSlack `member_*` and `message` subtype system events (`message_changed`, `message_deleted`, `thread_broadcast`) were not consistently enforcing sender authorization before enqueueing system events.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published version: `2026.2.25`\n- Affected range: `\u003c= 2026.2.25`\n- Planned patched version: `2026.2.26` (pre-set for publish-readiness)\n\n### Technical Details\nSlack system-event handlers in `src/slack/monitor/events/members.ts` and `src/slack/monitor/events/messages.ts` enqueued events after channel checks without shared sender authorization. Deployments relying on Slack DM allowlists (`dmPolicy` / `allowFrom`) or per-channel `users` allowlists could receive unauthorized system-event ingress from non-allowlisted senders.\n\nThe fix routes those handlers through `authorizeAndResolveSlackSystemEventContext(...)` and fails closed when message subtype sender identity cannot be resolved.\n\n### Fix Commit(s)\n- `3d30ba18a2aba1e1b302e77ff33145c3b06c01c8`\n\n### Release Process Note\n`patched_versions` is pre-set to `\u003e= 2026.2.26` so once npm `2026.2.26` is published, this advisory can be published without further field edits.\n\nThanks @tdjackey for reporting.","status":"published","published":"2026-03-12T14:21:59Z","modified":"2026-03-30T13:39:03Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:39:46.119458Z"},{"id":"GHSA-xgwg-m42c-8q62","title":"Duplicate Advisory: OpenClaw: Slack system events bypass sender authorization in member and message subtype handlers","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-v8cg-4474-49v8. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","status":"withdrawn","published":"2026-03-21T03:31:14Z","modified":"2026-03-24T19:06:24Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:39:41.724707Z"}],"nvd":[{"id":"CVE-2026-32895","description":"OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","status":"published","published":"2026-03-21T01:17:10.303Z","modified":"2026-06-17T10:36:31.703Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:10.126802Z"}],"osv":[{"id":"CVE-2026-32895","title":"OpenClaw \u003c 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers","description":"OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","status":"published","published":"2026-03-21T00:42:31.52Z","modified":"2026-10-28T02:30:31.254188059Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:45:01.548715Z"},{"id":"GHSA-v8cg-4474-49v8","title":"OpenClaw: Slack system events bypass sender authorization in member and message subtype handlers","description":"### Summary\nSlack `member_*` and `message` subtype system events (`message_changed`, `message_deleted`, `thread_broadcast`) were not consistently enforcing sender authorization before enqueueing system events.\n\n### Affected Packages / Versions\n- Package: `openclaw` (npm)\n- Latest published version: `2026.2.25`\n- Affected range: `\u003c= 2026.2.25`\n- Planned patched version: `2026.2.26` (pre-set for publish-readiness)\n\n### Technical Details\nSlack system-event handlers in `src/slack/monitor/events/members.ts` and `src/slack/monitor/events/messages.ts` enqueued events after channel checks without shared sender authorization. Deployments relying on Slack DM allowlists (`dmPolicy` / `allowFrom`) or per-channel `users` allowlists could receive unauthorized system-event ingress from non-allowlisted senders.\n\nThe fix routes those handlers through `authorizeAndResolveSlackSystemEventContext(...)` and fails closed when message subtype sender identity cannot be resolved.\n\n### Fix Commit(s)\n- `3d30ba18a2aba1e1b302e77ff33145c3b06c01c8`\n\n### Release Process Note\n`patched_versions` is pre-set to `\u003e= 2026.2.26` so once npm `2026.2.26` is published, this advisory can be published without further field edits.\n\nThanks @tdjackey for reporting.","status":"published","published":"2026-03-12T14:21:59Z","modified":"2026-03-30T13:56:22.086138Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:56.981655Z"},{"id":"GHSA-xgwg-m42c-8q62","title":"Duplicate Advisory: OpenClaw: Slack system events bypass sender authorization in member and message subtype handlers","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-v8cg-4474-49v8. This link is maintained to preserve external references.\n\n## Original Description\nOpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.","status":"withdrawn","published":"2026-03-21T03:31:14Z","modified":"2026-03-24T19:16:39.677708Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:59.835583Z"}]}}